A single tree produces about 2.6 x 10^2 pounds of oxygen each year. The Amazon rainforest has about 3.9 x 10^11 trees. About how many pounds of oxygen are produced in the rainforest each day? 2.8 x 10 ^ ____________________?
1 answer:
The amount produced by one tree times by how many trees:
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When u add it stays the same but for subtraction u change the sign.
A lot, 1:6 + 3:4 +3 = .116789465 hope this helps....
If 6 of the 13 books are new, then 7 of them are used. The ratio of new (6) to used (7) is
tan(x) = 10/60
tan(x) = 1/6
tan(x) = a -> x = arctan(a) + πn
x = arctan(1/6) + πn
x = 0.165 + πn
Best of Luck!
